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Wyszukujesz frazę "Sander, H" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Badania nad nicieniami pasożytami owadów
Studies on nematode parasites of insects
Autorzy:
Sander, H.
Fedorko, A.
Stanuszek, S.
Wisniewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/836909.pdf
Data publikacji:
1968
Wydawca:
Polskie Towarzystwo Parazytologiczne
Opis:
In Poland, investigations of nematode parasites of insects had not been carried out at all. The present study is aimed at gaining information on the parasitic nematofauna of the most common insect pests and on its influence on the abundance of the latter. We have taken the term parasitic nematofauna to mean nematodes living in the body of insects - whatever the type of relation with the host. More than 10000 examinations of insect pests, carried out in the years 1965-1966 have disclosed the existence of nematodes in their bodies. Analyses of grubs Melotontha sp.) and of adult forms of Colorado beetle were of greatest interest. It was found that some of the grubs were greatly infested with nematodes, chiefly with Cephalobellus papilliger Cobb (Thelastomatidae) although no harm was inflicted on the hostes by the nematodes. Several examinations of adult hibernating Colorado beetles revealed that most of them were infested with nematodes belonging to the Diplogasteridae family. All infested Colorado beetles perished in a short time. We have worked out a method for culturing this species of nematodes on artificial media. Moreover attempts at biological control of Colorado beetle were made by spraying the beetles with a water suspension of nematodes. The results were successful and this method may prove of use in insect control. Numerous summertime post-mortem examinations of larvae and adult forms of Colorado beetle have revealed that in the southern regions of Poland nematodes belonging to the Mermithidae family, play an essential role in reducing the abundance of Colorado beetle.
Źródło:
Annals of Parasitology; 1968, 14, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania nad nicieniami pasożytami owadów
Studies on nematode parasites of insects
Autorzy:
Sander, H.
Fedorko, A.
Stanuszek, S.
Wiśniewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2177632.pdf
Data publikacji:
1968
Wydawca:
Polskie Towarzystwo Parazytologiczne
Opis:
In Poland, investigations of nematode parasites of insects had not been carried out at all. The present study is aimed at gaining information on the parasitic nematofauna of the most common insect pests and on its influence on the abundance of the latter. We have taken the term parasitic nematofauna to mean nematodes living in the body of insects - whatever the type of relation with the host. More than 10000 examinations of insect pests, carried out in the years 1965-1966 have disclosed the existence of nematodes in their bodies. Analyses of grubs Melotontha sp.) and of adult forms of Colorado beetle were of greatest interest. It was found that some of the grubs were greatly infested with nematodes, chiefly with Cephalobellus papilliger Cobb (Thelastomatidae) although no harm was inflicted on the hostes by the nematodes. Several examinations of adult hibernating Colorado beetles revealed that most of them were infested with nematodes belonging to the Diplogasteridae family. All infested Colorado beetles perished in a short time. We have worked out a method for culturing this species of nematodes on artificial media. Moreover attempts at biological control of Colorado beetle were made by spraying the beetles with a water suspension of nematodes. The results were successful and this method may prove of use in insect control. Numerous summertime post-mortem examinations of larvae and adult forms of Colorado beetle have revealed that in the southern regions of Poland nematodes belonging to the Mermithidae family, play an essential role in reducing the abundance of Colorado beetle.
Źródło:
Wiadomości Parazytologiczne; 1968, 14, 1; 87-89
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Dunkeld larch (Larix x marschlinsii Coaz) in Estonia
Autorzy:
Sander, H
Laanelaid, A.
Powiązania:
https://bibliotekanauki.pl/articles/41729.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
larch
Japanese larch
Larix kaempferi
European larch
Larix decidua
Dunkeld larch
Larix x marschlinsii
Estonia
cumulative growth
dendrochronology
introduction history
tree age
Opis:
It is commonly known that Japanese larch, Larix kaempferi was first introduced in Europe in Great Britain in 1861. In the presence of European larches, L. decidua it was not long before the first hybrids between these species, called Dunkeld larches (Larix × marschlinsii), emerged there. It was found that there were several hybrid larch trees in Estonia that sprouted before one of their parent species was introduced in Europe. One of the oldest Dunkeld larches growing in Tallinn is about 210 years old. The radial growth of three Dunkeld larches in Estonia (in the cities of Pärnu and Tallinn and in the manor park of Suure-Kambja) and the determination of their age by cumulative growth graphs are discussed, with consideration given to the available knowledge on the introduction of Japanese larch. The conclusion is that there may have existed earlier alternative introduction routes of Japanese larch into northern Europe via Russia.
Źródło:
Dendrobiology; 2007, 57; 73-80
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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